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Table 4 Comparison of mean cut-scores across methods and sessions

From: Standard setting made easy: validating the Equal Z-score (EZ) method for setting cut-score for clinical examinations

 

Mean

SD

SE

95% CI of the difference

t

df

p-value

Lo

Hi

First mock OSCE

BRM.Y6.CS - BRM.Y7.CS

0.08

5.30

1.530

−3.28

3.45

0.054

11

0.958

EZ.Day1.CS - EZ.Day2.CS

1.17

4.34

1.254

−1.59

3.93

0.930

11

0.372

EZ.Day1.CS - EZ.Day3.CS

− 2.67

3.45

0.995

−4.86

−0.48

−2.680

11

0.021

EZ.Day2.CS - EZ.Day3.CS

− 3.83

4.20

1.211

−6.50

−1.17

−3.165

11

0.009

BRM.Y6.CS - EZ.Day1.CS

− 7.33

9.91

2.861

− 13.63

−1.04

− 2.563

11

0.026

BRM.Y6.CS - EZ.Day2.CS

− 6.17

9.34

2.696

−12.10

− 0.23

−2.287

11

0.043

BRM.Y6.CS - EZ.Day3.CS

− 10.00

10.15

2.931

−16.45

− 3.55

−3.412

11

0.006

BRM.Y7.CS - EZ.Day1.CS

− 7.42

9.10

2.627

− 13.20

−1.63

− 2.823

11

0.017

BRM.Y7.CS - EZ.Day2.CS

− 6.25

9.75

2.815

− 12.45

−0.05

− 2.220

11

0.048

BRM.Y7.CS - EZ.Day3.CS

− 10.08

10.57

3.051

−16.80

− 3.37

−3.305

11

0.007

Second mock OSCE

BRM.Y6.CS - BRM.Y7.CS

2.17

7.04

2.033

−2.31

6.64

1.066

11

0.309

EZ.Day1.CS - EZ.Day2.CS

1.42

3.34

0.965

−0.71

3.54

1.468

11

0.170

EZ.Day1.CS - EZ.Day3.CS

− 2.58

1.62

0.468

−3.61

−1.55

−5.519

11

< 0.0001

EZ.Day2.CS - EZ.Day3.CS

− 4.00

3.41

0.985

−6.17

−1.83

−4.062

11

0.002

BRM.Y6.CS - EZ.Day1.CS

− 6.42

5.00

1.443

−9.59

− 3.24

−4.446

11

0.001

BRM.Y6.CS - EZ.Day2.CS

− 5.00

5.88

1.697

−8.73

− 1.27

−2.947

11

0.013

BRM.Y6.CS - EZ.Day3.CS

− 9.00

5.29

1.528

− 12.36

− 5.64

−5.892

11

< 0.0001

BRM.Y7.CS - EZ.Day1.CS

− 8.58

6.11

1.764

− 12.47

−4.70

− 4.865

11

< 0.0001

BRM.Y7.CS - EZ.Day2.CS

− 7.17

6.34

1.829

− 11.19

− 3.14

−3.918

11

0.002

BRM.Y7.CS - EZ.Day3.CS

− 11.17

6.04

1.744

−15.01

−7.33

− 6.401

11

< 0.0001